Vulnerability Description
CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object content. Processing that content can execute attacker-controlled JavaScript in a browser context isolated from the origin of the application embedding the editor. This issue is fixed in versions 47.7.4 and 48.5.1.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280
- https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd7028
- https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4
- https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1
- https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq
FAQ
What is CVE-2026-116687?
CVE-2026-116687 is a vulnerability with a CVSS score of 3.1 (LOW). CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is...
How severe is CVE-2026-116687?
CVE-2026-116687 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116687?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.